Many of Valves hardcore or classic titles up until now had not made the jump over to MAC based Steam users, this will change as of tomorrow. Along with the new content that is being released multi platform for Left 4 Dead 2, Steam will also be releasing L4D2 for MAC users, and of course all of the new content will be released for free after the purchase of the game itself.
Many gamers wonder why the original L4D has not yet been released either. According to valve they intend to have the game released by the end of october right in time for Halloween, perfect L4D season. The timing for these releases seems to be perfect considering all of the content that will be packaged in for free from all of the past DLC has helped both Left 4 Dead titles along the way. So remember tomorrow is October 5th and if you own a MAC now is the time to invest in a Steam acccount and catch up on some great gaming.
Not only are the Left 4 Dead titles available, but remember that both Half Life 2 and Portal have also been released, so regardless if your a Zombie fan or not their are some great Valve titles to invest in for all you MAC users.